israel says it's hit 90% of the missiles headed for populated areas. it's also expensive. every intercepter missile it fires off costs as much as $100,000. almost 700 rockets have landed in israel, here one hit a girls' school in a southern city. thankfully it was empty. classes had been canceled since the fighting started. the air raid sirens forcing people to stay home and take cover in bomb shelters. civilians on both sides of the conflict are in the line of fire tonight. some of the most vulnerable, children. palestinian and israeli alike running for cover as missiles fly in but it won't be until the adults sit down and hash out a deal that they'll be safe. and as is always the question in this part of the world, if peace does come, how long will it last? for "nightline" i'm alex marquardt in the gaza strip. >> thank you for watching abc news. robin roberts and her sister sally on "gma" tomorrow morning to talk about robin's ongoing journey. "jimmy kimmel" next. >>> up next on an all in the "jimmy kimmel live". >> strike two weeks ago, if they didn't come back they wou